Large matrix multiplication

Multiply two square matrices as fast as possible.

Input

Two 2000 x 2000 matrices of uint32 values on STDIN, encoded back-to-back in row-major order, little-endian byte order.

Output

Write the resulting 2000 x 2000 product matrix to STDOUT in the same binary format (row-major, little-endian uint32).

Restrictions:60s256Mb 1 Score Packages

Feel free to create an issue if you need an extra library from the standard Ubuntu repository.

Name	Version	Description
libc6-dev	2.39-0ubuntu8.7	GNU C Library: Development Libraries and Header Files Contains the symlinks, headers, and object files needed to compile and link programs which use the standard C library.
libclang-common-14-dev	1:14.0.6-19build4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-15-dev	1:15.0.7-14build3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-16-dev	1:16.0.6-23ubuntu4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-17-dev	1:17.0.6-9ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-18-dev	1:18.1.3-1ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-19-dev	1:19.1.1-1ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-20-dev	1:20.1.2-0ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libcrypt-dev	1:4.4.36-4build1	libcrypt development files This package contains the files needed for developing applications that use libcrypt.
libgcc-10-dev	10.5.0-4ubuntu2.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-11-dev	11.5.0-1ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-12-dev	12.4.0-2ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-13-dev	13.3.0-6ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-14-dev	14.2.0-4ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libobjc-13-dev	13.3.0-6ubuntu2~24.04.1	Runtime library for GNU Objective-C applications (development files) This package contains the headers and static library files needed to build GNU ObjC applications.
libssl-dev	3.0.13-0ubuntu3.9	Secure Sockets Layer toolkit - development files This package is part of the OpenSSL project's implementation of the SSL and TLS cryptographic protocols for secure communication over the Internet. . It contains development libraries, header files, and manpages for libssl and libcrypto.
libstdc++-10-dev	10.5.0-4ubuntu2.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-11-dev	11.5.0-1ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-12-dev	12.4.0-2ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-13-dev	13.3.0-6ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-14-dev	14.2.0-4ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libtbb-dev	2021.11.0-2ubuntu2	parallelism library for C++ - development files TBB is a library that helps you leverage multi-core processor performance without having to be a threading expert. It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanism for performance and scalability. . (Note: if you are a user of the i386 architecture, i.e., 32-bit Intel or compatible hardware, this package only supports Pentium4-compatible and higher processors.) . This package includes the TBB development files.

Date	Author	Language	Status	Score
Mar 5, 2026 05:34	Daniel	RUSTrust-1.93.1	Success	4,079+46.58 RP
Mar 5, 2026 05:33	Daniel	RUSTrust-1.93.1	Success	4,158+96.60 RP
Mar 5, 2026 05:32	Daniel	RUSTrust-1.93.1	Success	4,332+9.02 RP
Mar 5, 2026 05:32	Daniel	RUSTrust-1.93.1	Success	4,349+31.81 RP
Mar 5, 2026 05:31	Daniel	RUSTrust-1.93.1	Success	4,767
Mar 5, 2026 05:30	Daniel	RUSTrust-1.93.1	Error
Mar 5, 2026 05:25	Daniel	RUSTrust-1.93.1	Success	18,862
Mar 5, 2026 05:20	Daniel	RUSTrust-1.93.1	Success	4,410+46.34 RP
Mar 5, 2026 05:18	Daniel	RUSTrust-1.93.1	Success	4,502+106.18 RP
Mar 5, 2026 00:02	olliecrow	CPPg++13.3.0	Success	3,510
Mar 4, 2026 23:51	olliecrow	CPPg++13.3.0	Success	3,512
Mar 4, 2026 23:43	olliecrow	CPPg++13.3.0	Success	3,510+3.24 RP
Mar 4, 2026 23:20	olliecrow	CPPg++13.3.0	Recalculating
Mar 4, 2026 23:14	olliecrow	CPPg++13.3.0	Success	4,292
Mar 4, 2026 23:09	olliecrow	CPPg++13.3.0	Success	4,060
Mar 4, 2026 23:03	olliecrow	CPPg++13.3.0	Success	3,515
Mar 4, 2026 22:53	olliecrow	CPPg++13.3.0	Success	3,518
Mar 4, 2026 22:48	olliecrow	CPPg++13.3.0	Success	3,516
Mar 4, 2026 22:43	olliecrow	CPPg++13.3.0	Success	3,681
Mar 4, 2026 22:37	olliecrow	CPPg++13.3.0	Success	3,691
Mar 4, 2026 22:27	olliecrow	CPPg++13.3.0	Success	3,562
Mar 4, 2026 22:22	olliecrow	CPPg++13.3.0	Success	3,521
Mar 4, 2026 22:18	olliecrow	CPPg++13.3.0	Success	3,516
Mar 4, 2026 22:14	olliecrow	CPPg++13.3.0	Success	3,514+40.71 RP
Mar 4, 2026 22:10	olliecrow	CPPclang++18.1.3	Success	3,570
Mar 4, 2026 22:06	olliecrow	CPPg++13.3.0	Success	3,565
Mar 4, 2026 22:01	olliecrow	CPPg++13.3.0	Success	3,574
Mar 4, 2026 21:57	olliecrow	CPPg++13.3.0	Success	3,780
Mar 4, 2026 21:53	olliecrow	CPPg++13.3.0	Success	3,565
Mar 4, 2026 21:49	olliecrow	CPPg++13.3.0	Success	3,567
Mar 4, 2026 21:46	olliecrow	CPPg++13.3.0	Success	3,565+17.98 RP
Mar 4, 2026 21:42	olliecrow	CPPg++13.3.0	Success	3,588+0.78 RP
Mar 4, 2026 21:38	olliecrow	CPPg++13.3.0	Success	3,589
Mar 4, 2026 21:34	olliecrow	CPPg++13.3.0	Success	3,589+20.04 RP
Mar 4, 2026 21:28	olliecrow	CPPg++13.3.0	Success	3,618
Mar 4, 2026 21:24	olliecrow	CPPg++13.3.0	Success	3,617
Mar 4, 2026 21:20	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 21:16	olliecrow	CPPclang++18.1.3	Success	3,632
Mar 4, 2026 21:12	olliecrow	CPPg++13.3.0	Success	3,616
Mar 4, 2026 21:09	olliecrow	CPPg++13.3.0	Success	3,618
Mar 4, 2026 21:02	olliecrow	CPPg++13.3.0	Success	3,615+4.58 RP
Mar 4, 2026 20:57	olliecrow	CPPg++13.3.0	Success	3,621
Mar 4, 2026 20:54	olliecrow	CPPg++13.3.0	Success	3,621
Mar 4, 2026 20:49	olliecrow	CPPg++13.3.0	Success	3,621+9.88 RP
Mar 4, 2026 20:46	olliecrow	CPPg++13.3.0	Success	3,638
Mar 4, 2026 20:42	olliecrow	CPPg++13.3.0	Success	3,634+1.51 RP
Mar 4, 2026 20:37	olliecrow	CPPg++13.3.0	Success	3,636+55.58 RP
Mar 4, 2026 20:33	olliecrow	CPPg++13.3.0	Success	3,718
Mar 4, 2026 20:30	olliecrow	CPPg++13.3.0	Success	3,714
Mar 4, 2026 20:25	olliecrow	CPPg++13.3.0	Success	3,711+0.73 RP
Mar 4, 2026 20:21	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 20:16	olliecrow	CPPg++13.3.0	Success	3,712+108.65 RP
Mar 4, 2026 20:16	Daniel	RUSTrust-1.93.1	Success	15,896
Mar 4, 2026 20:13	Daniel	RUSTrust-1.93.1	Success	5,467
Mar 4, 2026 20:12	olliecrow	CPPg++13.3.0	Success	3,902
Mar 4, 2026 20:09	Daniel	RUSTrust-1.93.1	Success	4,728+282.21 RP
Mar 4, 2026 20:08	olliecrow	CPPclang++18.1.3	Success	3,872
Mar 4, 2026 20:07	Daniel	RUSTrust-1.93.1	Success	12,616
Mar 4, 2026 20:03	olliecrow	CPPg++13.3.0	Success	3,871
Mar 4, 2026 20:00	Daniel	RUSTrust-1.93.1	Success	5,645
Mar 4, 2026 19:59	Daniel	RUSTrust-1.93.1	Error
Mar 4, 2026 19:59	olliecrow	CPPg++13.3.0	Success	3,868+1.34 RP
Mar 4, 2026 19:57	Daniel	RUSTrust-1.93.1	Error
Mar 4, 2026 19:56	olliecrow	CPPg++13.3.0	Success	3,881
Mar 4, 2026 19:55	Daniel	RUSTrust-1.93.1	Success	6,235
Mar 4, 2026 19:55	Daniel	RUSTrust-1.93.1	Error
Mar 4, 2026 19:54	Daniel	RUSTrust-1.93.1	Error
Mar 4, 2026 19:52	Daniel	RUSTrust-1.93.1	Error
Mar 4, 2026 19:52	olliecrow	CPPg++13.3.0	Success	3,900
Mar 4, 2026 19:48	olliecrow	CPPg++13.3.0	Success	3,928
Mar 4, 2026 19:47	Daniel	RUSTrust-1.93.1	Success	5,632
Mar 4, 2026 19:45	Daniel	RUSTrust-1.93.1	Success	5,592
Mar 4, 2026 19:44	olliecrow	CPPg++13.3.0	Success	3,870
Mar 4, 2026 19:40	olliecrow	CPPg++13.3.0	Success	3,870
Mar 4, 2026 19:36	olliecrow	CPPg++13.3.0	Success	3,898
Mar 4, 2026 19:32	olliecrow	CPPg++13.3.0	Success	3,870
Mar 4, 2026 19:28	olliecrow	CPPg++13.3.0	Success	3,870+9.31 RP
Mar 4, 2026 19:24	olliecrow	CPPg++13.3.0	Success	3,884+3.97 RP
Mar 4, 2026 19:19	olliecrow	CPPg++13.3.0	Success	3,890+1'537.42 RP
Mar 4, 2026 19:15	olliecrow	CPPg++13.3.0	Success	9,678+2.45 RP
Mar 4, 2026 19:11	olliecrow	CPPg++13.3.0	Success	9,792
Mar 4, 2026 19:07	olliecrow	CPPclang++18.1.3	Success	18,604
Mar 4, 2026 19:04	olliecrow	CPPg++13.3.0	Success	10,533
Mar 4, 2026 18:59	olliecrow	CPPg++13.3.0	Success	9,701+197.42 RP
Mar 4, 2026 18:55	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 18:51	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 18:47	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 18:42	olliecrow	CPPg++13.3.0	Success	19,315
Mar 4, 2026 18:35	olliecrow	CPPg++13.3.0	Success	15,556
Mar 4, 2026 18:32	olliecrow	CPPg++13.3.0	Success	11,999+62.21 RP
Mar 4, 2026 18:29	olliecrow	CPPg++13.3.0	Success	17,638
Mar 4, 2026 18:26	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 18:22	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 18:19	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 18:16	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 18:13	olliecrow	CPPg++13.3.0	Success	16,543
Mar 4, 2026 18:10	olliecrow	CPPclang++18.1.3	Success	12,967+99.33 RP
Mar 4, 2026 18:06	olliecrow	CPPg++13.3.0	Success	14,884+671.86 RP
Mar 4, 2026 18:03	olliecrow	CPPg++13.3.0	Error
Feb 17, 2026 00:58	Valentin Kofman	CPPg++13.3.0	Success	4,549

Model	Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz
Cores	1